Sandhu T S
Department of Avian and Aquatic Animal Medicine, New York State College of Veterinary Medicine, Cornell University, Eastport 11941.
Avian Dis. 1988 Jul-Sep;32(3):570-3.
An acute septicemic disease was reported in 1-to-2-week-old white pekin ducklings on eight Long Island duck farms. Gross lesions were primarily hepatomegaly and enlarged necrotic spleens. Fibrinous pericarditis, perihepatitis, and airsacculitis were observed in some birds. Mortality ranged from 0.5 to 5%. Streptococcus faecium was isolated from heart blood, livers, lungs, and spleens of sick or dead ducklings. Serologically, all isolates belonged to Lancefield Serogroup D. The disease was reproduced in 8-day-old susceptible ducklings by parenteral infection. The lesions were indistinguishable from those observed in field outbreaks. Novobiocin at 350 g per ton of feed was effective in controlling mortality in the field.
长岛的8个鸭场报告了1至2周龄的白来航雏鸭发生一种急性败血性疾病。肉眼可见的病变主要是肝脏肿大和脾脏肿大坏死。在一些病鸭中观察到纤维素性心包炎、肝周炎和气囊炎。死亡率在0.5%至5%之间。从患病或死亡雏鸭的心血、肝脏、肺和脾脏中分离出屎肠球菌。血清学检测显示，所有分离株均属于兰斯菲尔德血清群D。通过皮下注射感染，在8日龄易感雏鸭中复制出了该病。这些病变与在野外疫情中观察到的病变无法区分。每吨饲料中添加350克新生霉素可有效控制该病在野外的死亡率。
